baber/WOPTO huggingface dataset:
Patent GB-529727-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K5/26
Filed: 1939-05-20
Abstract: 529,727. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. May 20, 1939, No. 15061. Convention date, May 20, 1938. [Class 35] A dynamo electric machine with a frictional driving connection and a shaft journalled in end hubs on the stator has clamping arms, pivotally supported on the base member at a point eccentric to the motor axis and embracing the outer surfaces of the hubs, and resilient means between the base and arms to maintain the required friction in the driving connection. In the belt-drive motor shown, each of the bearing hubs is flattened at 16 and is surrounded by a resilient annulus 18 extending into grooves 17 and the ring 18 is, in turn, surrounded by a slotted metal band 19. The hub is embraced by clamping arms 21, 22 pivoted at 26 to upward extensions 23 of the base 24 and arcuate projections 33 on the arms extend through the slotted band 19 to press the resilient member 18 on to the hub. The arms 21, 22 are held together by rings 35 and their outward motion, when opened, is limited by abutment. on inwardly directed lugs 40 on the extensions 23. A spring 38 is secured at its ends to the base and to one or other of the arms to bias the stator and tension and belt in either direction, according to the. side of the motor on which the driven machine is placed.
Patent GB-553571-A (GB)
Title: Improvements in or relating to pressure accumulators or containers
IPC: F15B1/12
Filed: 1941-11-22
Abstract: 553,571. Hydraulic accumulators. PUMP ENGINEERING SERVICE CORPORATION. Nov. 22, 1941, No. 15070. Convention date, Jan. 13. [Class 69 (ii)] [Also in Group XXVI] A pressure container is divided into two chambers by a diaphragm 13 having an enlarged rim portion 30 generally parallel to the normal axis of the diaphragm and extending into a mouth formed by peripheral wall portions 21, 22, 27 of the sections 10, 12 of the container ; the rim of the diaphragm is formed with fingers 31, 32 parallel to the normal axis and coacting with a flange 20a and an auxiliary ring 34 to form a tight joint under the pressure of air leaking into the mouth.
Patent GB-311113-A (GB)
Title: Improvements in dust collectors
IPC: B01D46/04
Filed: 1928-05-23
Abstract: 311,113. Baron & Sons, Ltd., J., and Greenwood, H. S. May 23, 1928. Filtering. - A dust collector comprises a chamber A comprising a skeleton or open frame work covered with filter cloth and a series of filter or collecting bags D depending from the chamber, from which bags the dust is readily removed. The dusty air enters at one or both ends of the chamber, which is accessible through hand-holes G covered by sleeves. A baftle plate may be located within the chamber, opposite the entry, on which the dusty air may impinge.
Patent GB-1166982-A (GB)
Title: Radiation Sensitive Pickup Device
IPC: H01J29/45
Filed: 1968-03-29
Abstract: 1,166,982. Television pick-up tubes; photoconductive elements. WESTINGHOUSE ELECTRIC CORP. 29 March, 1968 [8 May, 1967], No. 15123/68. Headings H1D and H1K. A pick-up tube has a radiation transmitting face-plate 12 and an input screen 14 within the envelope comprising a porous layer of an insulating material exhibiting the property of generating free electrons from the material into the voids within the layer in response to input radiations, of wavelength 1-10,000 Š units, wherein an electron beam is directed on to one surface of the screen to establish a first potential thereon, and wherein an electrical conductive layer between the screen and the faceplate is at a second potential more positive than the first. The porous layer has a density less than 10% of its normal bulk density and an electric field across it of less than 10<SP>5</SP> volts/cm. The conductive layer may be of nickel, palladium, tungsten or platinum of thickness 50- 250 Š units. The porous layer may be of KCI, CsI, NaCl, NaBr, Se, As, CuO, Cu 2 O, Ag 2 S, AgI, AgBr, AgCl, LiF, NaF, RbI, CuCl, KBr, CuBr, CdBr 2 , NaI, KI or CsTe2, and the thickness may be 10-30 microns. The tube faceplate may be of LiF, CaF, BaF, MgF, glass, crystal quartz or fused quartz.
Patent GB-645463-A (GB)
Title: A centrifugal separator and a method for the use thereof
IPC: B04B1/12
Filed: 1948-06-04
Abstract: 645,463. Centrifugal separators. AKTIEBOLAGET SEPARATOR. June 4, 1948, Nos. 15139 [Convention date, June 13,1947], 15140, 15141 [Convention dates, Oct. 24, 1947], and 15142 [Convention date, April 13, 1948]. [Class 23] Relates to a centrifugal separator suitable, inter alia, for separating gluten from starch particles and for washing wax crystals suspended in a mixture of naphtha and oil. Starch milk passes from a cavity 17, Fig. 1, into the spaces 2 between coned discs 3 and is concentrated. The liquid discharges through the overflow 10. The concentrate passes into channels 11 and the solids separate further and slide along the inner walls of the channels. A flushing liquid introduced through channels 6 moves over these solids in counter-current and carries the gluten particles with it to the overflow 10. The purified starch passes into a chamber 8 and is discharged continuously through openings 9. The initial introduction of the starch milk from the cavity 17 is at the level of the entrances to the separating channels 11. The discs 3 may have a number of annular ridges. The discs 3 may be arranged in groups, Fig. 3, with the end discs extended to form collecting chambers 15 followed by separating channels 16. In the form shown in Fig. 4, separating channels 31, 32 are defined by a ring 30 and lead to a longer separating channel 18. This discharges into an annular chamber 33 with peripheral outlets 9. Flushing liquid is directed on to the solids sliding on the wall of the channel 18 through passages 21, 23, 27. The passages 21 open into a groove 22 and the passages 23 have flared outlets. The fluid from these passages has a velocity sufficient only to wash the gluten particles out of the surface of the solids. The passages 27 are convergent and the fluid from them disturbs the layer of solids to permit the gluten particles to move to the surface. The channel 18 may be in two portions of opposite conicity so that the solids cross from one wall to the other at the junction. The starch milk may be introduced at the periphery of the coned discs, and narrow channels open to the discs provided in ribs 50, Fig. 11, may be provided to prevent the incoming starch milk from eddying in the collecting chamber 8. In Fig. 7 the separating channel 18 is formed with enlargements 36, 37 which cause the solids to leave the channel wall in the vicinity of the flushing liquid openings 35. The openings 35 are in the wall along which the solids slide and such a disposition may be used without the enlargements.
Patent GB-582174-A (GB)
Title: Improvements in or relating to apparatus for affording audible indications
IPC: G01S11/02
Filed: 1942-10-28
Abstract: 582,174. Valve generating circuits. BULL, E. W. Oct. 28, 1942, No. 15154. [Class 40 (v)] [Also in Group XXXVIII] Predetermined ranges of values of a variable are audibly indicated by an electric oscillation generator coupled to a sound emitter, the arrangement being such that, for one range, control potentials applied to the generator cause the generation of continuous oscillations, whereas, for another range, intermittent oscillations are produced. As applied to altimeters, no audible indication is afforded above a given height, the intermittent signal is given at heights above another level with the rate of interruption increasing with decreasing height, whereas below that level the signal is continuous. Alternatively, the intermittent indication is given as a confidence signal above a certain height and the continuous indication as a danger signal below said height. Control potential depending on the height is applied to the grid of valve 12 which controls a generator comprising a pair of coupled valves 1, 2 of which valve 1 supplies a tuned transformer 3 connected to a sound emitter. The valves have a common cathode resistance 5. If the control potential applied to the grid of valve 1 just exceeds the grid potential of valve 2 as determined by potentiometer 7, 8, the valves operate as a multi-vibrator until condenser 9 becomes charged to disable valve 1, the generation being restarted when the charge leaks away. Increasing control potentials (loss of height) produce increased interruption frequencies until the potential built up across condenser 9 is insufficient to produce interruption, whereupon a continuous audible indication is afforded. The altimeter may be as described in Specification 581,161, [Group XXXVIII]. Specification 535,778 also is referred to.
Patent GB-1067902-A (GB)
Title: Improvements in invalid chairs
Inventor: PRITCHARD DENNIS HENRY
IPC: A61G5/10
Filed: 1965-04-09
Abstract: 1,067,902. Wheel chair fittings. VESSA Ltd. April 12, 1966 [April 9, 1966], No. 15165/65. Heading B7B. The side frames 5 of a wheel chair are removably mounted in sockets 6, 7 on the main frame so that when reversed end for end the upwardly facing sockets 9 which are normally closed by a resilient plug 10 form convenient supports for an adjustable table.
Patent GB-1392326-A (GB)
Title: Hydraulic powering systems for winches
IPC: B63B21/16
Filed: 1972-03-30
Abstract: 1392326 Hydrostatic transmissions BERGENS MEKANISKE VERKSTEDER AS 30 March 1972 [31 March 1971] 15237/72 Heading F2D In a hydrostatic transmission, particularly for trawl winches of fishing boats, a pump 1, of fixed displacement, supplies a motor 2 through a reversing and throttling valve 13, the motor having a by-pass valve 6 and the return to the pump 1 a pressure reduction valve 4. When the pump is supplying the motor (position H of valve 3) the valve 4 is controlled by a spring and by the output pressure from the pump as well as the pressure of an expansion tank 5 so that the throttling by this valve is increased by an increased output pressure from the pump to slow the motor and reduce this pressure (and vice-versa on decrease of pressure) so that the pump output can be maintained at a desired value. When the motor 2 overruns the pump 1 (position L of valve 3) and is used for braking a pilot valve 8 opens the by-pass 6 at a predetermined pressure from the motor 2 so that the degree to which the motor drives the pump is controlled. The valve 4 here acts to prevent cavitation occurring in the motor. An operating handle (not shown) operates valve 3, and by means of this the throttling of the return from the motor can be made complete (position S of valve 3), the braking being limited by a by-pass valve 6 controlled by a pressure-operated pilot valve 7. A valve 9 can be operated which bleeds control fluid from the by-pass valve 6 to fully open this valve and allow the motor to turn freely. An alternative embodiment (Fig. 2, not shown) has a throttle valve preset for a maximum opening pressure in place of valve 6 and a further throttle valve preset for a minimum opening pressure connected in parallel across the pump between pump and valve 3, the valves 7 and 8 not being present in this embodiment. A further embodiment (Fig. 3, not shown) has a throttle valve adjustable in a range between maximum and minimum pressures in parallel across the motor (in place of valves 6, 7, 8) and a yet further embodiment has a spring seated non- return valve connected in parallel across the pump as the throttle valve opening at a minimum pressure of Fig. 2 (Fig. 4, not shown).
Patent GB-443405-A (GB)
Title: An improved process for making heat-stable polystyrol
IPC: C08J3/00
Filed: 1935-05-25
Abstract: Heat-stable polystyrol is prepared by heating polystyrol at a raised temperature but below the decomposition temperature, that is, below about 160 DEG  C. until the softening point is increased to above 80 DEG  C.  Specifications 243,768, 307,936, [both in Class 2 (iii)], 355,790, and 401,500 are referred to.
Patent GB-1529648-A (GB)
Title: Television-based alarm system
IPC: G08B13/196
Filed: 1977-04-14
Abstract: 1529648 Intruder alarm systems ROBERT BOSCH GmbH 14 April 1977 [17 April 1976] 15501/77 Heading G4N An alarm system for detecting a movement or change in the field of view of a television camera 1 1  comprises a discriminator 5 1  responsive to the video signal and adapted to produce a signal upon the occurrence of a predetermined characteristic in the picture content of the video signal, means 8 1  for providing in synchronism with the video signal a masking signal defining one or more portions of the field from which discriminator signals are not required, means 6 for logically combining the masking signal and the discriminator signals in order to remove any discriminator signals derived from said one or more portions, and means 10, 11 and 16 for evaluating the remaining discriminator signals according to a predetermined criterion to produce an alarm signal when said criterion is satisfied. As shown, a plurality of cameras 1 1 -1 n . discriminators 5 1 -5 n , masking signal generators 8 1 -8 n  and 13 1 -13 n , and reference signal generators 14 1 -14 n  are sequentially utilized by means of electronic switches 2, 4, 7, 12 and 15.
Patent GB-1059511-A (GB)
Title: Improvements relating to arrangements for repeating signals such as telegraph system marking and spacing signals
Inventor: WELLER JOHN MICHAEL
Filed: 1964-04-15
Abstract: 1,059,511. Converting. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 12, 1965 [April 15, 1964], No. 15601/64. Heading H2F. [Also in Division H3] In a D.C. amplifier wherein the signals change the phase of the output of an oscillator with subsequent rectification as in Specification 944,856, the oscillations are applied to two circuits each consisting of two transistors and a diode in series, and the phase-controlled oscillations are used to determine which of the two circuits is operative. In the Figure, an oscillator VT1 supplies a push-pull amplifier VT2, VT3 whose output via T2 is applied (a) to transistors VT9, VT10 in series with diode D8, and (b) to transistors VT11, VT12 in series with diode D9. The oscillations pass through one of these circuits (with rectification) and the smoothed output current flows through a load connected at 8 in a sense depending on which of the above circuits is conducting. The oscillations are also supplied via T4 to transistors VT5, VT6 one of which conducts to determine the phase of the output from transformer T5. This output is amplified by VT7, VT8 and applied to transformer T3 to supply bias to the bases of transistors VT9-VT12 by means of " speed-up " rectifiers D4-D7. The phases of the outputs of T5 are such that one pair of transistors conducts while the other pair is cut off. The input signals at 7 determine which of VT5, VT6 conducts, and hence the phase of the input to T3. Details.-The oscillator operates at 25 kc./s. The amplifying transistors VT2, VT3 bottom in operation and are protected from overload by the transistor VT4 in their common emitter lead. This transistor may comprise a coupled pair (Fig. 1A, not shown). Diode D1 provides bias for VT4 which is fairly independent of its emitter current. Diodes D8, D9 protect the switching transistors from reverse voltages. The phase-control circuit PR is biased by diode D3 and capacitor C5 so that it is held in a definite state (with VT5 conducting) in the absence of an input signal. Zener diodes ZD1, ZD2 protect this circuit from excessive input signals.
Patent GB-579160-A (GB)
Title: Improvements in or relating to processes for the purification of magnesium chloride
IPC: C25C3/04
Filed: 1942-11-05
Abstract: 579,160. Anhydrous magnesium chloride. ABBEY, A. (Consolidated Mining & Smelting Co. of Canada, Ltd.). Nov. 5, 1942, No. 15656. Drawings to Specification. [Class 1 (iii)] [Also in Group XXXVI] In the preparation of pure anhydrous magnesium chloride for the electrolytic production of the metal, magnesium chloride is charged into a purification furnace maintained at 725-755‹C., cell mud withdrawn from the electrolytic process, consisting mainly of Mgo, SiO2, carbon, iron and aluminium salts and containing entrained metallic magnesium being added, the Mg causing precipitation of soluble impurities of metal elements below Mg in the electromotive series, e.g., iron and aluminium, the fused purified magnesium chloride is separated from the mass which settles to the bottom of the furnace and may be further purified in a second settling furnace before use.
Patent GB-994901-A (GB)
Title: System for transmitting information in a cylindrical waveguide
Inventor: SLIEBREGT MARINUS VAN
IPC: H01P1/162
Filed: 1962-04-25
Abstract: 994,901. Waveguides. DE STAAT DER NEDERLANDEN TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE. April 25, 1962 [May 9, 1961], No. 15660/62. Heading H1W. Use is made of the circular electric H 21  mode in a cylindrical waveguide, preferably in a pulse-code modulation system. It is shown in the Specification that for this mode (depicted in Fig. 4), the circumferential and axial magnetic fields and the radial electric field are zero on the circle R of radius 0À7188a, where a is the guide radius. At the two positions A, B, the circumferential electric field and the radial magnetic field are also zero. Since spurious modes have finite fields at these positions, a pair D of dissipative bars situated at the radial positions A, B may be used to suppress these modes. The bars may be made of dielectric material coated with graphite or nickel-chromium. They may be radially adjustable.
Patent GB-365000-A (GB)
Title: Improved switch for electrically-heated kettles and the like
IPC: H01H37/70
Filed: 1931-05-29
Abstract: 365,000. Automatic circuit-breakers. PATE, G. and LAIRD, J. R., of Carron Co., Carron, Stirlingshire. May 29, 1931, No. 15723. [Class 38 (v).] A thermally-released circuit-breaker which opens the circuit of an electric kettle &c. when the latter is overheated comprises a bimetallic strip 5 which engages an adjustable screw 12 on a lever 4, thereby rotating the lever about its pivot 9 against the action of a spring 13 till the nose 10 of the lever moves clear of a notch 11 in a push-bar 2 whereupon the bar 2 moves to the left under the action of a spring 3 and carries the operating lever 6 of a tumblertype switch into the "off " position. The circuit is reclosed by pressing in the bar 2 but this cannot be done until the kettle has cooled sufficiently for a second bimetallic strip 8, which has moved across the end of the bar 2 during the opening movement of the bar, to move back out of the path of the bar.
Patent GB-823885-A (GB)
Title: Improvements in or relating to cable drums
Inventor: JOHNSON DOUGLAS NORMAN
IPC: B65H75/20
Filed: 1957-05-17
Abstract: 823,885. Cable reels. FORGE CRAFT Ltd. May 19, 1958 [May 17, 1957], No. 15774/57. Class 99(2). A cable drum 1 has an axle 8 on which one or more casings 16, 17 for receiving a cable termination are mounted to be rotatable about the axle and lockable in relation thereto so as to take up cable slack and to protect the termination. The axially split and hinged casings 16, 17 which may be locked by snaplocks 18, are mounted on U-shaped brackets 12, 13 which have extended handles 14, 15 and can be clamped on the axle by wingnuts 19, 20. The brackets 12, 13 are positioned between stepped portions of the axle and collars 10, 11. Rims 1 and 2 are broken at 21, 22 to allow passage of the cable therethrough and subsidiary hoops 23 may divide off convolutions of the cable.
Patent GB-632826-A (GB)
Title: Improvements in sleeve construction
IPC: A41D27/10
Filed: 1947-06-16
Abstract: 632,826. Garment sleeves. BERMAN, W. W. June 16, 1947, No. 15831. Convention date, Feb. 24. [Class 141] The top edge of a sleeve has its upper part secured directly to the shoulder portion of the garment and the remainder joined to the garment by means of an expansion pleat comprising upper and lower overlying arcuate members which are tapered in width towards their extremities and are secured together along their convex edges, and are secured along their concave edges, one to the armhole and the other to the sleeve edge, elastic means being provided in line with the vertical diameter of the armseye for connecting the pleat to the garment. As shown, the sleeve 12 is sewn to the shoulder yoke 11 along the line 16. The arcuate members forming the expansion pleat 17 are each formed of two pieces 18, 19 and 20, 21 joined together at their wider ends to form seams 26, 27 which are in line with the armhole diameter D, the sleeve seam 13 and the side seam 14 of the garment. An elastic tape 30, secured to the bottom edge of the seams 26, 27 and to the side seam 14 holds the pleat 17 in position. In an alternative construction, the arcuate members forming the pleat are each formed of a single piece of material which is reinforced by a tape or by folding the material on itself to replace the seams 26, 27.
Patent GB-420441-A (GB)
Title: Improved method of and means for grinding or abrading articles
IPC: B24B5/04
Filed: 1933-06-01
Abstract: 420,441. Grinding rolls &c. CRAVEN BROS. (MANCHESTER), Ltd., GREENWOOD, J. R., and WALLS, A. G., Reddish, Stockport. June 1, 1933, No. 15840. [Class 60] A roll for a rolling-mill. &c. is ground by means of two grinding-wheels employed in succession, the first grinding being by means of a wheel having its axis parallel to the roll, and the finish grinding being by means of a fine grained wheel having its axis at an angle, preferably a right-angle to the axis of the roll. The machine comprises a sliding saddle 2 carrying a transverse wheel slide 3 on which is mounted a grinding-wheel 4 surrounded by a guard 6 adjustable by a rack 10 and pinion 9 and locked by bolts 8 ; the wheel 4 performs the first grinding operation, and when this is complete, the wheel is withdrawn from the roll, and a bracket 11 is secured to the guard 6. The bracket supports a spindle 12, at rightangles to the spindle 5 of the wheel 4, carrying a finishing grinding-wheel 19, and the spindle 12 is driven by a belt 14 from a pulley 18 on the spindle 5, the belt passing over guide pulleys 16, 17, either or both of which may be adjustable to tension the belt ; the face of the wheel 19 may be trued to fit the cylindrical surface of the work. Water is supplied by a nozzle 20 and piping 21. The wheel 19 may be a lapping- wheel loaded with abrasive powder.
Patent GB-854146-A (GB)
Title: Improvements relating to seat assemblies for tractors and like vehicles
Inventor: SPEIGHT RONALD
IPC: B60N2/50
Filed: 1958-05-17
Abstract: 854,146. Seats. EVERTAUT SEATING Ltd. April 17, 1959 [May 17, 1958], No. 15911/58. Class 52(2) A tractor seat member 4 with seat pan 5 is mounted on a base frame 1 having upstanding brackets 2,2; 3,3 by means of links 11, 12 so as to be movable from a forward in-use position to a rearward out-of-use position, the first connection X of link 11 to the seat 4 lying, in the in-use position, below the dead centre position in the plane containing the pivotal connection axes Y, Z of the links to the base frame. A common cross shaft forming the pivotal connection of link 11 to the base member carries a rubber buffer acting as a stop in the in-use position.
Patent GB-141565-A (GB)
Title: Improvements in or relating to level and inclination indicators for aircraft
IPC: G01C9/20
Filed: 1919-06-25
Abstract: 141,565. Hefford, A. June 25, 1919. Clinometers.-A level and clinometer for aircraft comprises a quantity of granular &c. material 2 within a glass vessel 1 which preferably has two bulbs 1<a>, 1<b> connected by a restricted passage 1<c>. The bulb 1<a> may be marked with a scale of angles. The apparatus is enclosed in a case 3 having glass windows 4. Inversion of the aircraft is indicated by the material 2 passing into the bulb 1<b>. The vessel 1 may be in the form of a sphere or a vertical or horizontal tube or it may consist of a spheroidal vessel with a flattened heavy face.